<?php
    				class City  extends Baogg_Db_Table {
    		
    				protected $_name;
    				protected $_db ;
    				protected $_primary;
    		
    				function __construct() {
    				$this->_name =   "city";
    		
    				$this->primary= $this->_primary="city_id";
    				parent::__construct();
    		}
    		}